The Advertising Standards Authority (ASA) ordered TfL to withdraw the poster, which carried the tagline: "Faster, smarter, easier, Oyster", because it breached the advertising code.

BBC: An 'oyster' travel card, sitting on top of a card reader

The commercial breached the advertising code of practice because it caused distress to "a significant number" of viewers who had experienced a bee sting allergy, the ASA found.

BBC: A scene from the advert

Meister said the council's revised marketing and advertising code now has sections to shield youngsters from the ads, including a provision not to use images, objects and cartoons popular with children.

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